the amount of proximity you would have to have to do this in other words, there weren't half a dozen plo leaders or family member whose got sick when somebody poisoned a meal. if in fact this turns out to be a poisoning, it had to be somebody one on one who to cut this into this drink in a fair amount. >> i know polonium 210 used with alexander and suspected with yasser arafat. his body has been interred for years. what's the chances they'll find traces of that? >> the fbi, the guy who worked on the other case a shelf life of 138 days. a pound of it 138, a half pound of it. interred since 2004. a highly concentrated but very small amount. what they're probably not going to find is evidence of polonium. what they could find is a daughter product like lead 206, which would leave behind but that's not so unique that it couldn't have come from something else. >> but the israelis are suspected that if, in fact, it's has the as any evidence they've used this kind of thing before? >> yes and no. there is a case of khaled in september of 1997 was on the street in jordan when two israeli agents c